There are some, but they support the basics for growth and color... low N and P, NSW alk and calcium levels and lots of daylight spectrum. Nobody wants to hear that stuff anymore. Dr. Holmes-Farley's P and N articles have links to awesome studies on actual acropora that show decreased calcification rates with even slightly elevated rates of either, yet most will not believe it or do not know about them since they are not in a BRSTv Video.